External stimulus detection device

Abstract

To provide an external stimulus detection device capable of suppressing unintended notifications when attached.SOLUTION: An external stimulus detection device has a power generation unit, a power storage unit, a communication unit, a control unit, a housing, and an external stimulus suppression unit. The power generation unit generates power in response to an external stimulus. The power storage unit stores power output from the power generation unit. The communication unit performs wireless communication. The control unit is activated when an amount of charge stored by the power storage unit exceeds a first threshold, and notifies that an external stimulus has been applied based on the power stored by the power storage unit. The housing accommodates the power generation unit, the power storage unit, the communication unit, and the control unit. The external stimulus suppression unit is provided in the housing so as to be located between the housing and an object to which the housing is attached, and suppresses the external stimulus.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] SUMMARY OF THE DISCLOSURE An embodiment of the present invention relates to an external stimulus detection device. [Background technology]

[0002] There is known a detection device that generates power in response to an external stimulus and notifies an object to which a housing is attached that the external stimulus has been applied, using the generated power. The external stimulus may be, for example, vibration, heat, pressure, sound, or ultrasound. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2022-549634 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the detection device described in Patent Document 1 may detect an external stimulus that occurs when the device is attached to the device. This leads to the generation of unintended notifications, which is undesirable.

[0005] An object of the present invention is to provide an external stimulus detection device capable of suppressing unintended notifications when attached. [Means for solving the problem]

[0006] The external stimulus detection device of the embodiment has a power generation unit, a power storage unit, a communication unit, a control unit, a housing, and an external stimulus suppression unit. The power generation unit generates power in response to an external stimulus. The power storage unit stores the power output from the power generation unit. The communication unit performs wireless communication. The control unit is activated when the amount of charge stored by the power storage unit exceeds a first threshold, and notifies that an external stimulus has been applied based on the power stored by the power storage unit. The housing accommodates the power generation unit, the power storage unit, the communication unit, and the control unit. The external stimulus suppression unit is provided in the housing so as to be located between the housing and an object to which the housing is attached, and suppresses the external stimulus. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing an example of a state in which the external stimulus detection device 1 is being used. [Diagram 2] 1 is a diagram showing an example of the configuration of an external stimulus detection device 1. FIG. [Diagram 3] FIG. 2 is a diagram illustrating an example of the configuration of a control device 12. [Figure 4] FIG. 2 illustrates an example of the configuration of a power storage unit 122. [Diagram 5] 10 is a diagram showing an example of a change over time in the voltage of the power stored in the power storage unit 122. FIG. [Figure 6] 10 is a diagram showing an example of a processing flow in which the external stimulus detection device 1 transmits notification information. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] An external stimulus detection device according to an embodiment will be described with reference to the drawings. In each drawing, the same components are given the same reference numerals. As an example of the external stimulus detection device according to the embodiment, an external stimulus detection device 1 will be described.

[0009] (Configuration of the external stimulus detection device) A description will now be given of the configuration of the external stimulus detection device 1. Fig. 1 is a diagram showing an example of how the external stimulus detection device 1 is used.

[0010] The external stimulus detection device 1 is a device that detects an external stimulus applied to an object to which the external stimulus detection device 1 is attached. The external stimulus detection device 1 is a type of sensor used to ensure the safety of workers in, for example, factories that use industrial machines, equipment, robots, etc. The external stimulus is, for example, vibration, heat, pressure, sound, ultrasonic waves, etc., but is not limited to these. As an example, a case where the external stimulus is vibration will be described. In this case, the external stimulus detection device 1 detects the vibration applied to the external stimulus detection device 1 attached to the object as the vibration applied to the object.

[0011] 1, the external stimulus detection device 1 is attached to an attachment target device 2. That is, in this example, the object to which the external stimulus detection device 1 is attached is the attachment target device 2. The attachment target device 2 is, for example, a multifunction device. Instead of a multifunction device, the attachment target device 2 may be another type of printing device, may be a device other than a printing device, or may be an object other than a device.

[0012] When the external stimulus detection device 1 detects vibration applied to the attachment target device 2, it generates power in response to the vibration applied to the attachment target device 2. The external stimulus detection device 1 uses the power generated in this way to notify, by wireless communication, that vibration has been applied to the attachment target device 2. Therefore, the external stimulus detection device 1 does not require an external power supply and can operate without being connected to a wired cable.

[0013] Fig. 2 is a diagram showing an example of the configuration of the external stimulus detection device 1. In the example shown in Fig. 2, the external stimulus detection device 1 includes a power generation unit 11, a control unit 12, a light-emitting unit 13, a housing 14, and an external stimulus suppression unit 15.

[0014] The power generating unit 11 generates power in response to an external stimulus. In other words, the power generating unit 11 converts the external stimulus into electrical energy. In this example, the external stimulus is a vibration applied to the external stimulus detection device 1. In this case, the power generating unit 11 generates power in response to the vibration. The power generating unit 11 may be any member as long as it includes an element capable of generating power in response to the vibration. The power generating unit 11 is, for example, a member including a piezoelectric element as an element capable of generating power in response to the vibration. When the power generating unit 11 is not configured to include an AC / DC converter, the power output from the power generating unit 11 is AC power. When the power generating unit 11 is configured to include an AC / DC converter, the power output from the power generating unit 11 may be DC power. As an example, a case where the power generating unit 11 is not configured to include an AC (Alternating Current) / DC (Direct Current) converter will be described.

[0015] The power generation unit 11 may be configured to include an amplifier that amplifies the external stimulus applied to the external stimulus detection device 1. When the external stimulus is vibration, such an amplifier is, for example, a weight that amplifies the vibration, but is not limited to this.

[0016] The control device 12 is a device that is activated in response to the power output from the power generation unit 11. FIG. 3 is a diagram showing an example of the configuration of the control device 12. As shown in FIG. 3, the power generation unit 11 is connected to the control device 12. In the example shown in FIG. 3, the control device 12 is configured to include a light-emitting unit 13. The control device 12 may not include the light-emitting unit 13 and may be configured separately from the light-emitting unit 13.

[0017] The control device 12 includes a power conversion unit 121 , a power storage unit 122 , a detection control unit 123 , a storage unit 124 , a communication unit 125 , and a light emitting unit 13 .

[0018] The power conversion unit 121 converts the AC power output from the power generation unit 11 into DC power. The power conversion unit 121 is, for example, an AC / DC converter, but may be another circuit capable of converting the AC power output from the power generation unit 11 into DC power. When the power generation unit 11 is configured to include an AC / DC converter, the control device 12 may not be configured to include the power conversion unit 121.

[0019] The power storage unit 122 stores the power output from the power generation unit 11. The configuration of the power storage unit 122 is, for example, as shown in Fig. 4. Fig. 4 is a diagram showing an example of the configuration of the power storage unit 122. In Fig. 4, in order to simplify the drawing, the power generation unit 11 is omitted, and a state in which the power conversion unit 121 and the power storage unit 122 are connected is depicted.

[0020] In the example shown in FIG. 4, the power storage unit 122 includes three power storage units CA to CC, a switching unit SW, and a power storage control unit CR that controls three switching elements (not shown).

[0021] Some or all of the power storage units CA to CC may be the same type of power storage units, or may be different types of power storage units. As an example, a case where the power storage units CA to CC are the same type of power storage units will be described. Each of the power storage units CA to CC is, for example, a supercapacitor, a hybrid supercapacitor, a lithium battery, a lithium-sulfur battery, an MLCC (Multi-layer Ceramic Capacitor), a sodium-sulfur battery, a redox flow battery, etc., but is not limited to these. As an example, a case where each of the power storage units CA to CC is a supercapacitor will be described.

[0022] Some or all of the power storage units CA to CC may be configured to have different capacitances from each other, or may be configured to have the same capacitance from each other. As an example, a case where the power storage units CA to CC have different capacitances from each other will be described. As an example, a case where the power storage unit CA has a capacitance of 1 μF, the power storage unit CB has a capacitance of 22 μF, and the power storage unit CC has a capacitance of 47 μF will be described.

[0023] Power storage units CA to CC are connected in parallel between the positive output terminal of power conversion unit 121 and the negative output terminal of power conversion unit 121. In order to simplify the drawing, transmission lines connecting the positive output terminal inside power storage unit 122 to each of power storage units CA to CC are omitted in Fig. 4. In order to simplify the drawing, transmission lines connecting the negative output terminal inside power storage unit 122 to each of power storage units CA to CC are omitted in Fig. 4.

[0024] One of the two terminals of each of the power storage units CA to CC is electrically connected to the power storage control unit CR via a transmission line, and the other of the two terminals is electrically connected to the switching unit SW via a transmission line.

[0025] The switching unit SW is a member that accepts an operation to specify the capacity to be stored by the power storage unit 122. The switching unit SW is, for example, a dial switch, but may be another member capable of accepting the operation instead. The switching unit SW accepts, for example, an operation to switch the capacity to one of the first capacity to the seventh capacity. The first capacity refers to the capacitance of only the power storage unit CA. The second capacity refers to the capacitance of only the power storage unit CB. The third capacity refers to the capacitance of only the power storage unit CC. The fourth capacity refers to the rigid capacity of the power storage unit CA and the power storage unit CB. The fifth capacity refers to the rigid capacity of the power storage unit CA and the power storage unit CC. The sixth capacity refers to the combined capacity of the power storage unit CB and the power storage unit CC. The seventh capacity refers to the combined capacity of the power storage units CA to CC.

[0026] The power storage control unit CR controls switching elements (not shown) provided between the switching unit SW and each of the power storage units CA to CC in order to realize the capacity designated by the switching unit SW.

[0027] The power storage control unit CR controls, for example, a switching element (not shown) provided between the positive terminal of the power conversion unit 121 and the power storage unit CA, and switches the electrical connection state between the terminal and the power storage unit CA between an on state and an off state. When the connection state is an on state, there is electrical continuity between the terminal and the power storage unit CA. When the connection state is an off state, there is no electrical continuity between the terminal and the power storage unit CA. The switching element is, for example, a field effect transistor, but may be another type of switching element such as a bipolar transistor. For convenience of explanation, the connection state is referred to as a first connection state, and the switching element is referred to as a first switching element.

[0028] The power storage control unit CR controls, for example, a switching element (not shown) provided between the positive terminal of the power conversion unit 121 and the power storage unit CB, and switches the electrical connection state between the terminal and the power storage unit CB between an on state and an off state. When the connection state is an on state, there is electrical continuity between the terminal and the power storage unit CB. When the connection state is an off state, there is no electrical continuity between the terminal and the power storage unit CB. The switching element is, for example, a field effect transistor, but may be another type of switching element such as a bipolar transistor. For convenience of explanation, the connection state is referred to as a second connection state, and the switching element is referred to as a second switching element.

[0029] The power storage control unit CR controls, for example, a switching element (not shown) provided between the positive terminal of the power conversion unit 121 and the power storage unit CC, and switches the electrical connection state between the terminal and the power storage unit CC between an on state and an off state. When the connection state is an on state, there is electrical continuity between the terminal and the power storage unit CC. When the connection state is an off state, there is no electrical continuity between the terminal and the power storage unit CC. The switching element is, for example, a field effect transistor, but may be another type of switching element such as a bipolar transistor. For convenience of explanation, the connection state is referred to as a third connection state, and the switching element is referred to as a third switching element.

[0030] When the switching unit SW specifies the first capacity, the power storage control unit CR controls the first to third switching elements so that the first connection state is an on state, the second connection state is an off state, and the third connection state is an off state. When the switching unit SW specifies the second capacity, the power storage control unit CR controls the first to third switching elements so that the first connection state is an off state, the second connection state is an on state, and the third connection state is an off state. When the switching unit SW specifies the third capacity, the power storage control unit CR controls the first to third switching elements so that the first connection state is an off state, the second connection state is an off state, and the third connection state is an on state. When the switching unit SW specifies the fourth capacity, the power storage control unit CR controls the first to third switching elements so that the first connection state is an on state, the second connection state is an on state, and the third connection state is an off state. When the switching unit SW specifies the fifth capacity, the power storage control unit CR controls the first to third switching elements so that the first connection state is the on state, the second connection state is the off state, and the third connection state is the on state. When the switching unit SW specifies the sixth capacity, the power storage control unit CR controls the first to third switching elements so that the first connection state is the off state, the second connection state is the on state, and the third connection state is the on state. When the switching unit SW specifies the seventh capacity, the power storage control unit CR controls the first to third switching elements so that the first connection state is the on state, the second connection state is the on state, and the third connection state is the on state.

[0031] When DC power is being supplied from the power conversion unit 121, the power storage control unit CR detects whether or not all of the first to third connection states are in the off state. The method for such detection may be a known method or a method to be developed in the future. When the power storage control unit CR detects that all of the first to third connection states are in the off state, it notifies, for example, that all of the first to third connection states are in the off state by causing the light emitting unit 13 to emit light in a predetermined first light emitting pattern. This makes it possible for the external stimulus detection device 1 to be prevented from being used without functioning normally due to all of the first to third connection states being in the off state. The power storage control unit CR may be configured not to perform such a notification.

[0032] The switching unit SW may be further configured to be capable of receiving an operation that specifies discharging the power storage unit 122. In this case, the power storage control unit CR discharges the power stored in each of the power storage units CA to CC. The method of performing such discharging may be a known method or a method to be developed in the future. The switching unit SW is an example of a capacity switching unit.

[0033] Instead of such a configuration, the power storage unit 122 may be configured, for example, by a variable capacitor. Instead of such a configuration, the power storage unit 122 may be configured, for example, to be capable of changing the combined capacitance by attaching or detaching a capacitor.

[0034] When the amount of charge stored in the power storage unit 122 exceeds a first threshold value determined in advance, the detection control unit 123 is activated by the power stored in the power storage unit 122. When activated, the detection control unit 123 controls the communication unit 125 based on the power stored in the power storage unit 122, and notifies the user by wireless communication that vibration has been applied. When notifying the user that vibration has been applied, the detection control unit 123 reads out identification information previously stored in the storage unit 124, and generates notification information including the read out identification information and information indicating that vibration has been applied. The identification information stored in the storage unit 124 may be any information as long as it is information that can identify the external stimulus detection device 1. The detection control unit 123 notifies the user that vibration has been applied by having the communication unit 125 transmit the generated notification information to another device. This allows the information processing device receiving notification information from each of the multiple external stimulus detection devices 1 to easily identify which external stimulus detection device 1 the notification information was received from. The method of detecting the amount of charge by the detection control unit 123 may be a known method or a method to be developed in the future. The method of activating the detection control unit 123 when the amount of charge exceeds the first threshold may be a known method or a method to be developed in the future.

[0035] Furthermore, when the amount of charge stored in the power storage unit 122 exceeds a first threshold, the detection control unit 123 causes the light emitting unit 13 to emit light in a predetermined second light emitting pattern to notify that the amount of charge has exceeded the first threshold. The detection control unit 123 may be configured not to issue such a notification. The detection control unit 123 is an example of a control unit.

[0036] The storage unit 124 is a storage device including, for example, an Electrically Erasable Programmable Read Only Memory (EEPROM), a Read Only Memory (ROM), a Random Access Memory (RAM), etc. The storage unit 124 may be an external storage device connected via a digital input / output port such as a Universal Serial Bus (USB) instead of being built into the external stimulus detection device 1. The storage unit 124 stores the above-mentioned identification information, etc.

[0037] The communication unit 125 includes an antenna for wireless communication, and transmits the above-mentioned notification information to other devices by wireless communication according to control from the detection control unit 123. The method by which the communication unit 125 transmits the notification information to other devices may be a known method or a method to be developed in the future.

[0038] The light emitting unit 13 is, for example, a light emitting diode (LED). Instead of an LED, the light emitting unit 13 may be another light emitting element capable of emitting light in response to control from the detection control unit 123.

[0039] The housing 14 is a case that houses the power generation unit 11 and the control device 12.

[0040] The external stimulus suppression unit 15 is provided on the housing 14 so as to be located between the housing 14 and the attachment target device 2 to which the housing 14 is attached. The external stimulus suppression unit 15 is a member that suppresses the external stimulus. In this example, since the external stimulus is vibration, the external stimulus suppression unit 15 is configured to include, for example, a vibration-proof spacer. The external stimulus suppression unit 15 may be configured to include a member capable of absorbing vibration instead of the vibration-proof spacer. The member may be a member made of a material capable of absorbing vibration, such as plastic, rubber, or silicon, or may be a member configured to include a spring and a damper. The external stimulus suppression unit 15 may be configured to include a plurality of vibration-proof spacers. In this case, in the external stimulus suppression unit 15, the plurality of vibration-proof spacers are stacked to more reliably suppress the vibration applied to the housing 14.

[0041] The above-described external stimulus detection device 1 includes the external stimulus suppression unit 15, and thus can suppress vibrations applied to the housing 14 of the external stimulus detection device 1 when the device is attached to the attachment target device 2. As a result, the external stimulus detection device 1 can suppress unintended notifications when the device is attached.

[0042] In the external stimulus detection device 1, the voltage of the power stored in the power storage unit 122 rises more slowly as the vibration energy applied to the housing 14 decreases. FIG. 5 is a diagram showing an example of a change over time in the voltage of the power stored in the power storage unit 122. The horizontal axis of the graph shown in FIG. 5 indicates the elapsed time since the power storage unit 122 starts storing power. The vertical axis of the graph indicates the voltage of the power stored in the power storage unit 122. A broken line PA plotted on the graph indicates a change over time in the voltage of the power stored in the power storage unit 122 when a vibration of a certain vibrational energy EA occurs. A broken line PB plotted on the graph indicates a change over time in the voltage of the power stored in the power storage unit 122 when a vibration of a vibrational energy EB lower than the vibrational energy EA occurs. A broken line PC plotted on the graph indicates a change over time in the voltage of the power stored in the power storage unit 122 when a vibration of a vibrational energy EC lower than the vibrational energy EB occurs. Each of the broken lines PA to PC indicates that the voltage of the power stored in the power storage unit 122 reaches a maximum voltage VA over time. The broken line PB takes a longer time to reach the maximum voltage VA than the broken line PA. The maximum voltage VA is the maximum value of the voltage of the power that can be stored in the power storage unit 122. The broken line PC takes a longer time to reach the maximum voltage VA than the broken line PB. This indicates that the lower the vibration energy applied to the housing 14, the slower the voltage of the power stored in the power storage unit 122 rises. Therefore, when the external stimulus detection device 1 is attached to the attachment target device 2, the external stimulus detection device 1 equipped with the external stimulus suppression unit 15 can suppress unintended notifications.

[0043] The time required for the voltage of the power stored in the power storage unit 122 to reach the maximum voltage VA also varies depending on the capacity of the power storage unit 122 to store power. Specifically, the time increases as the capacity increases. For this reason, when attaching the external stimulus detection device 1 to the attachment target device 2, the user of the external stimulus detection device 1 can more reliably prevent the external stimulus detection device 1 from making unintended notifications during attachment by switching the capacity to the seventh capacity using the switching unit SW.

[0044] (Processing by which the external stimulus detection device transmits notification information) A process in which the external stimulus detection device 1 transmits notification information will be described with reference to Fig. 6. Fig. 6 is a diagram showing an example of a process flow in which the external stimulus detection device 1 transmits notification information. As an example, a case in which the external stimulus detection device 1 is attached to the attachment target device 2 at a timing before the process of ACT110 shown in Fig. 6 is performed will be described.

[0045] The power generation unit 11 continues to wait until the housing 14 vibrates (ACT110). In Fig. 6, the process of ACT110 is indicated by "vibration?".

[0046] When the housing 14 vibrates (ACT110-YES), the power generation unit 11 starts generating power in response to the vibration applied to the housing 14 (ACT120). In Fig. 6, the process of ACT120 is indicated by "start power generation".

[0047] Next, the power storage unit 122 receives the power output from the power generation unit 11 that started generating power in ACT 120 via the power conversion unit 121, and stores the received power (ACT 130). In Fig. 6, the process of ACT 130 is indicated by "start of power storage".

[0048] Next, the detection control unit 123 continues to wait without starting up until the amount of charge stored in the power storage unit 122 exceeds the first threshold (ACT140). In Fig. 6, the process of ACT140 is indicated by "Exceeded first threshold?".

[0049] The detection control unit 123 is activated when the amount of charge stored in the power storage unit 122 exceeds the first threshold (ACT140-YES). After being activated, the detection control unit 123 causes the light emitting unit 13 to emit light in the second light emitting pattern, and notifies that the amount of charge has exceeded the first threshold (ACT150). In FIG. 6, the process of ACT150 is indicated by "light emission".

[0050] Next, the detection control unit 123 reads out the identification information from the storage unit 124, and generates notification information including the read out identification information. After generating the notification information, the detection control unit 123 controls the communication unit 125 to transmit the generated notification information to another device (ACT160). In Fig. 6, the process of ACT160 is indicated by "notification". After the process of ACT160 is performed, the detection control unit 123 ends the process of the flowchart shown in Fig. 6, and stops operation.

[0051] As described above, the external stimulus detection device 1 has the power generation unit 11, the power storage unit 122, the communication unit 125, the detection control unit 123, the housing 14, and the external stimulus suppression unit 15. The power generation unit 11 generates power in response to vibration. The power storage unit 122 stores the power output from the power generation unit 11. The communication unit 125 performs wireless communication. The detection control unit 123 is activated when the charge amount stored by the power storage unit 122 exceeds a first threshold, and notifies that an external stimulus has been applied based on the power stored by the power storage unit 122. The housing 14 accommodates the power generation unit 11, the power storage unit 122, the communication unit 125, and the detection control unit 123. The external stimulus suppression unit 15 is provided in the housing 14 so as to be located between the housing 14 and the attachment target device 2 to which the housing 14 is attached, and suppresses the external stimulus. This allows the external stimulus detection device 1 to suppress unintended notifications at the time of attachment.

[0052] The external stimulus detection device 1 described above may be configured to include a threshold switching unit that switches the first threshold to one of a plurality of values ​​in response to a received operation. The threshold switching unit may have any configuration as long as it is capable of switching the first threshold to one of a plurality of values ​​in response to a received operation. The threshold switching unit includes, for example, an operation unit that accepts an operation to switch the first threshold to one of a plurality of values, and a switching control unit that switches the first threshold to one of the plurality of values ​​in response to the operation accepted by the operation unit.

[0053] When the external stimulus is heat, the power generating unit 11 described above is, for example, a member including a Peltier element, but is not limited to this.

[0054] The items described above may be combined in any manner.

[0055] (Additional Note) [1] an external stimulus detection device comprising: a power generation unit that generates electricity in response to an external stimulus; a power storage unit that stores the power output from the power generation unit; a communication unit that performs wireless communication; a control unit that is activated when an amount of charge stored by the power storage unit exceeds a first threshold and notifies that the external stimulus has been applied based on the power stored by the power storage unit; a housing that accommodates the power generation unit, the power storage unit, the communication unit, and the control unit; and an external stimulus suppression unit that is provided in the housing so as to be positioned between the housing and an object to which the housing is attached and the housing, and that suppresses the external stimulus. [2] The external stimulus detection device according to [1], wherein the external stimulus is vibration applied to the housing. [3] An external stimulus detection device as described in [1] or [2], comprising a memory unit that stores identification information that identifies the device itself, and when the control unit notifies that the external stimulus has been applied, notifies that the external stimulus has been applied by causing the communication unit to transmit notification information to another device, the notification information including information indicating that the external stimulus has been applied and the identification information. [4] The external stimulus detection device according to any one of [1] to [3], wherein the power storage unit is provided with a capacity switching unit that switches the capacity of the power storage. [5] The external stimulus detection device according to any one of [1] to [3], further comprising a threshold switching unit that switches the first threshold to one of a plurality of values ​​in response to a received operation.

[0056] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope of the invention and its equivalents described in the claims, as well as in the scope and spirit of the invention. [Explanation of symbols]

[0057] 1...external stimulus detection device, 2...attachment target device, 11...power generation unit, 12...control device, 13...light emission unit, 14...housing, 15...external stimulus suppression unit, 121...power conversion unit, 122...power storage unit, 123...detection control unit, 124...storage unit, 125...communication unit, CA, CB, CC...power storage unit, CR...power storage control unit, SW...switching unit

Claims

1. A power generation unit that generates electricity in response to an external stimulus; a power storage unit that stores the power output from the power generation unit; A communication unit for performing wireless communication; a control unit that is activated when the amount of charge stored in the power storage unit exceeds a first threshold and notifies the user that the external stimulus has been applied based on the power stored in the power storage unit; a housing that houses the power generation unit, the power storage unit, the communication unit, and the control unit; an external stimulus suppression unit that is provided on the housing so as to be positioned between the housing and an object to which the housing is attached and that suppresses the external stimulus; An external stimulus detection device comprising:

2. The external stimulus is a vibration applied to the housing. The external stimulus detection device according to claim 1 .

3. A storage unit that stores identification information for identifying the device itself, When notifying that the external stimulus has been applied, the control unit notifies that the external stimulus has been applied by causing the communication unit to transmit notification information including information indicating that the external stimulus has been applied and the identification information to another device. The external stimulus detection device according to claim 1 .

4. The power storage unit includes a capacity switching unit that switches a capacity for storing the power. The external stimulus detection device according to claim 1 .

5. a threshold value switching unit that switches the first threshold value to one of a plurality of values ​​in response to a received operation; The external stimulus detection device according to claim 1 .

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